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Finding the Fourth Proportional to 60,582.22, 90,866.84 and 21,140.08

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Solution

The fourth proportional to 60,582.22, 90,866.84 and 21,140.08 is: 31,707.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,582.22 : 90,866.84 = 21,140.08 : x
  2. Step 2: Convert to fraction form
    60,582.22/90,866.84 = 21,140.08/x
  3. Step 3: Cross multiply
    60,582.22x = 90,866.84 × 21,140.08
  4. Step 4: Simplify right side
    60,582.22x = 1,920,932,266.95
  5. Step 5: Solve for x
    x = 1,920,932,266.95/60,582.22
  6. Step 6: Final answer
    x = 31,707.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.